Physics Exam Past Questions and Answers | JAMB, WAEC and NECO

Physics is the science that studies the nature and properties of matter and energy. It covers topics like motion, heat, light, sound, electricity, magnetism, and the structure of atoms.

• Question 851:

  

  The air column as shown above is set into vibration by the turning fork. In this State of resonance, the waves in the air column will be

  Options:
  A) stationary and transverse
  B) stationary and longitudinal
  C) progressive and transverse
  D) progressive and longitudinal
  Show Answer
  The correct answer is B .
• Question 852: A plane sound wave of frequency 85.5Hz and velocity 342ms^-1 is reflected from a vertical wall. At what distance from the wall does the wave have antinode? Options:
  A) 2m
  B) 4m
  C) 1m
  D) 3m
  Show Answer
  The correct answer is C .
• Question 853: A force of 100N was used to kick a football of mass 0.8kg. Find the velocity with which the ball moves if it takes 0.8s to be kicked Options:
  A) $32m{s}^{-1}$
  B) $50m{s}^{-1}$
  C) $64m{s}^{-1}$
  D) $100m{s}^{-1}$
  Show Answer
  The correct answer is D .
• Question 854:

  

  The phase difference between waves P and q in the diagram above is

  Options:
  A) 2π
  B) π
  C) ^π/₄
  D) ^π/₂
  Show Answer
  The correct answer is D .
• Question 855:

  

  For what value of 6 are the forces in the diagram above in equilib4ruim

  Options:
  A) ${15}^{\circ }$
  B) ${30}^{\circ }$
  C) ${45}^{\circ }$
  D) ${60}^{\circ }$
  Show Answer
  The correct answer is D .
• Question 856: A block of aluminum is heated electrically by a 25 W heater. if the temperature rises by 10°C in 5 minutes, the heat capacity of the aluminum is? Options:
  A) 850 JK^-1
  B) 750 JK^-1
  C) 650 JK^-1
  D) 500 JK^-1
  Show Answer
  The correct answer is B .
• Question 857:

  In a series R-L-C circuit at resonance, the voltages across the resistor and the inductors are 30V and 40V respectively. What is the voltage across the capacitor?

  Options:
  A) 30V
  B) 40V
  C) 50V
  D) 70V
  Show Answer
  The correct answer is B .
• Question 858: A stone of mass 1kg is dropped from a height of 10m above the ground and falls freely under gravity. Its kinetic energy 5m above the ground is then equal to Options:
  A) its kinetic energy on the ground
  B) twice its initial potential energy
  C) its initial potential energy
  D) half its initial potential energy
  Show Answer
  The correct answer is D .
• Question 859:

  The electrolyte used in the Nickel-Iron (NiFe) accumulator is

  Options:
  A) dilute tetraoxosulphate(VI) acid
  B) barium chloride solution
  C) potassium hydroxide solution
  D) sodium hydroxide solution
  Show Answer
  The correct answer is C .
• Question 860:

  During the transformation of matter from the solid to the liquid state, the heat supplied does not produce a temperature increase because

  Options:
  A) the heat energy is quickly conducted away
  B) the heat capacity has become very large as the substance melts
  C) the heat gained is equal to the heat lost by the substance
  D) all the heat is used to break the bonds holding the molecules of the solid together
  Show Answer
  The correct answer is D .